Cinematograph target apparatus.



D. H. CORBIN & A/W. HARRIS.

GINEMATOGRAPH TARGET APPARATUS.

APPLICATION FILED MAY 16,1914.

1,125,661. Patented Jan.19;1915.

w=- N n 1 ill! l l l I I l l ll cinematograph DOUGLAS HAYNES 001mm AND ENGLAND, ASSIGNORS TO LIFE TARG ITE warns arena OFFICE.

ARTHUR WILLIAM HARRIS, 0F BIRMINGHAM,

ETS LIMITED, 01? LONDON, ENGLAND.

CINEMATOGRAPH TARGET APPARATUS.

1,125,661 Specification of Application filed May 16,

T6 all i/lm'm; it may concern Be it known that we, DoreLAs HAYNES CORB'IN: and Azrrnm: WILLIAM HARRIS, sub- Britain, residing at 98 Kings road, Erdington, Birmingham, in the county of \Varwick, England, and Durley Dene; Jafi'ray' Road, .Erdington, Birmingham aforesaid, respectively, have invented a new and useful Improvement in Cinematograph Target Apparatus; and we do herebydeclare the followin to'be a full, clear, and exact description of the same.

0111' invention comprises improvements in target apparatus of the kind which is described in the prior Patents Nos; 1027371, 1075894'and 1072299. In the -prior patent specification No. 1075894 a means for arresting the movement of the I clnematograph through the intermediary of ing member, attached to sound Waves propagated by the discharge of the rifle is shown, and the present invention embodies an improvement in or modification of the apparatus described in this said prior specification. In the said prior patent we have the motion arresting device illustrated as including a microphone, this specificationalso describing a modified form of the invention in which the microphone vibrates to'make or break a circuit in circuit with a relay, the relay responding to variations of the current inlthe circuit including the microphone, but according to the present invention we provide an extremely simple mechanical device for breakingan electrical circuit such eans embodying a pair ,of contacts normally engaging eac other but located one on either side of a contact breakand actuated by the vibrations of the diaphragm. 4

Referrin to the drawings :Figure 1. is a part sectional plan of apparatus according to this invention. Fig. 2. is a perspective view of same.

In the prior patent specification No. 1075894 a relay 18 is described the contacts 20 of which are broken when the current passing through thewindings around the polar extensions is varied under the influence of a microphone. According to the present invention a pair of flanking co tact springs iz-a are employed which are intended to form part of the same circuit' as the flanking contact springs 19'describedin the prior specification these flanking contact Lette s P n Patented Jan. 19, 1915.

1914. Serial No. 839,004.

diaphragm 0 located in a sound collector This diaphragm is so tuned or constructed that when a shot 'is fired it will vibrate, the vibrations being imparted to the contact breaker which thus throws apart the flankin'g contact springs thereby breaking the circuit for the purpose of arresting the motion of, the cinematograph, in the manner described in the prior specification No. 1075894.

The flanking contact springs a--a are in circuit with the electromagnet c the cores of which are so wound as to retain the connection f in contact with the member 0 against the action of the spring it as long as current is passing in through said contacts; but as soon as the circuit is broken the armature is pulled over,'breaking the contact and de- -energizing the relay 2' in similar manner to that described in the aforementioned prior 1 combination of a cmematograph; a diaphragm responsive to sound waves; a contact member carried by said diaphragm; a pair of flanking contact springs located one on each side of said contact member normally maintaining a circuit but adapted to separate and open the circuit under the influence of vibrations set up by the diaphragnn when a shot is fired; and means for arresting the movement of the cinemato-.

graph responsive to the separation of said flanking contact springs; for the purpose set forth.

2. In cinematograph target apparatus, the combination of a cinematograph; a diaphragm responsive to sound waves: a contact member carried by said diaphragm; a pair of flanking contact springs located one on each side of said contact member normally maintaining a circuit but adapted tov separate and open the circuit under the influence of vibrations set up by the diaphragm when a shot is fired: means for arresting the movement of the cinematograph responsive to the separation of said flanking contactsprings; a. screen: and means responsive to the separation of said flanking contact springs for pbra gm; 3

actuating the screen for the "purpose of obliterating shot; holes; for the purpose set forth.

3. In cinematograph target apparatus, the combination of a cinematograph; a diaphragm responsive to sound waves; a sound collector of conical form containing said diacontact member carried by said diaphragm; a pair of flanking contact springs located one on each side of said coniect member normally maintaining a circuit but adapted to separate and open the circuit under the influence of vibrations set up by the diaphragm when a shot is fired; an electrornagnet in circuit, with said flanking con- 4 tact springs; and means for arresting the movement of the cinematograph responsive to the deenergizing of said electromagnet; for the purpose set forth 4. In, cinematograph target apparatus, the i combination of a cinematograph; a diaphragm responsive to sound Waves; a sound collector of conical form containing said diaphragm; a contact member carried'by said diaphragm; a pair of flanking contact memes).

springs located one on each side of said contact member normally maintaining a circuit but adapted to separate and open the circuit under the influence of vibrations set up by the diaphragm when a shot is fired; an

names to this specification in the presence of two subscribing Witnesses.

DOUGLAS HAYNES CORBIN. ARTHUR WILLIAM HARRIS.

Witnesses as to Douglas Haynes Corbin:

HAROLD J. C. Fonnns'rnn, HERBERT J. O. BARTON.

Witnesses as to Arthur William Harris:

FRANK H. LOGAN, 'W. H. BERRIGAN. 

